Foldable bed

ABSTRACT

A foldable bed includes a front right extensible rod, rear right extensible rod, front left extensible rod, rear left extensible rod, front support portion, front support bottom base, rear central extensible rod, bridge-shaped link member, first front right oblique rod, second front right oblique rod, first rear right oblique rod, second rear right oblique rod, first front left oblique rod, second front left oblique rod, first rear left oblique rod, second rear left oblique rod, two rear oblique rods, two front oblique rods, two front slide rods, front connecting rod, rear connecting rod and sheet-like element. Therefore, the foldable bed is compact and easy to fold.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present disclosure relates to beds, and in particular to a foldable bed.

2. Description of the Related Art

Conventional beds are bulky and difficult to store and transport. As a result, people living in tiny homes are reluctant to purchase beds for their babies and pets. Therefore, conventional beds still have room for improvement.

BRIEF SUMMARY OF THE INVENTION

An objective of the present disclosure is to provide a foldable bed.

To achieve at least the above objective, the present disclosure provides a foldable bed, comprising: a front right extensible rod, a rear right extensible rod, a front left extensible rod, a rear left extensible rod, a front support portion, a front support bottom base, a rear central extensible rod, a bridge-shaped link member, a first front right oblique rod, a second front right oblique rod, a first rear right oblique rod, a second rear right oblique rod, a first front left oblique rod, a second front left oblique rod, a first rear left oblique rod, a second rear left oblique rod, two rear oblique rods, two front oblique rods, two front slide rods, a front connecting rod, a rear connecting rod and a sheet-like element, wherein the front right extensible rod, the rear right extensible rod, the front left extensible rod and the rear left extensible rod are disposed at four vertices of a rectangle, respectively, such that the front support portion and the front support bottom base are disposed between the front right extensible rod and the front left extensible rod, with the front support portion disposed above the front support bottom base, with the rear central extensible rod disposed between the rear right extensible rod and the rear left extensible rod. The two ends of the first front right oblique rod pivotally connect to the top end of the front right extensible rod and the bottom end of the rear right extensible rod, respectively. The two ends of the second front right oblique rod movably connect to the front right extensible rod and pivotally connect to the front support bottom base, respectively. The two ends of the first front left oblique rod pivotally connect to the top end of the front left extensible rod and the bottom end of the rear left extensible rod, respectively. The two ends of the second front left oblique rod movably connect to the front left extensible rod and pivotally connect to the front support bottom base, respectively. The two ends of the first rear right oblique rod pivotally connect to the bottom end of the front right extensible rod and the top end of the rear right extensible rod, respectively. The two ends of the second rear right oblique rod pivotally connect to the bottom end of the rear central extensible rod and movably connect to the rear right extensible rod, respectively. The two ends of the first rear left oblique rod pivotally connect to the bottom end of the front left extensible rod and the top end of the rear left extensible rod, respectively. The two ends of the second rear left oblique rod pivotally connect to the bottom end of the rear central extensible rod and movably connect to the rear left extensible rod, respectively. The two ends of the two rear oblique rods pivotally connect to the top end of the rear central extensible rod and the bottom end of the rear right extensible rod, respectively, and pivotally connect to the top end of the rear central extensible rod and the bottom end of the rear left extensible rod, respectively. The two ends of the two front oblique rods pivotally connect to the front support portion and the bottom end of the front right extensible rod, respectively, and pivotally connect to the front support portion and the bottom end of the front left extensible rod, respectively. The two front slide rods have their one ends pivotally connected to upper portions of the two front oblique rods and have their the other ends slidably connected to the second front right oblique rod and the second front left oblique rod, respectively. The two ends of the bridge-shaped link member pivotally connect to the front support bottom base and the bottom end of the rear central extensible rod, respectively. The bridge-shaped link member is pivotally rotatable about a center thereof. The bridge-shaped link member has a front pivotal connection point and a rear pivotal connection point, with the front and rear pivotal connection points lying in front of the center and at rear of the center, respectively. The two ends of the front connecting rod pivotally connect to the front pivotal connection point and the front support portion, respectively. The two ends of the rear connecting rod pivotally connect to the rear pivotal connection point and movably connect to the rear central extensible rod, respectively. The sheet-like element is held by the top end of the front right extensible rod, the top end of the rear right extensible rod, the top end of the front left extensible rod, the top end of the rear left extensible rod, the top end of the rear central extensible rod and a top portion of the front support portion.

In an embodiment of the present disclosure, an outer rod of the front right extensible rod is disposed above an inner rod of the front right extensible rod, an outer rod of the rear right extensible rod is disposed above an inner rod of the rear right extensible rod, an outer rod of the front left extensible rod is disposed above an inner rod of the front left extensible rod, an outer rod of the rear left extensible rod is disposed above an inner rod of the rear left extensible rod, and an outer rod of the rear central extensible rod is disposed above an inner rod of the rear central extensible rod.

In an embodiment of the present disclosure, the second front right oblique rod movably connect to the outer rod of the front right extensible rod, the second front left oblique rod movably connect to the outer rod of the front left extensible rod, the second rear right oblique rod movably connect to the outer rod of the rear right extensible rod, the second rear left oblique rod movably connect to the outer rod of the rear right extensible rod, and the rear connecting rod movably connect to the outer rod of the rear central extensible rod.

Technical features in an embodiment of the present disclosure are described below. The first front right oblique rod and the first rear right oblique rod cross each other and pivotally connect to each other. The first front left oblique rod and the first rear left oblique rod cross each other and pivotally connect to each other. The second front right oblique rod and the front oblique rod cross each other and pivotally connect to each other. The second front left oblique rod and the front oblique rod cross each other and pivotally connect to each other. The second front left oblique rod and the front oblique rod cross each other and pivotally connect to each other. The second rear right oblique rod and the rear oblique rod cross each other and pivotally connect to each other. The second rear left oblique rod and the rear oblique rod cross each other and pivotally connect to each other.

In an embodiment of the present disclosure, the foldable bed further comprises a basal bottom element disposed at the bottom of the sheet-like element, the top end of the second front right oblique rod, the top end of the rear right extensible rod, the top end of the second front left oblique rod, the top end of the rear left extensible rod, the top end of the rear connecting rod, and the top portion of the front support portion to support the sheet-like element.

In an embodiment of the present disclosure, the foldable bed further comprises two support elements disposed at an outer rod of the rear right extensible rod and an outer rod of the rear left extensible rod, respectively, to support the basal bottom element.

In an embodiment of the present disclosure, the foldable bed further comprises a winding element. The winding element has one end connect to one of the front right extensible rod, the rear right extensible rod, the front left extensible rod, the rear left extensible rod and the rear central extensible rod.

In an embodiment of the present disclosure, when the foldable bed is unfolded, the top portion of the front support portion is lower than a top end of the front right extensible rod, a top end of the rear right extensible rod, a top end of the front left extensible rod, a top end of the rear left extensible rod, and a top end of the rear central extensible rod.

Therefore, the foldable bed of the present disclosure can be freely unfolded and folded. When unfolded, the foldable bed has the largest possible volume so as to function. The foldable bed thus folded has the least possible volume (as its rods are drawn together) such that the folded foldable bed is convenient to store and transport.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a perspective view of a foldable bed according to an embodiment of the present disclosure.

FIG. 1B is a rear view of the foldable bed according to an embodiment of the present disclosure.

FIG. 1C is a left lateral view of the foldable bed according to an embodiment of the present disclosure.

FIG. 1D is a top view of the foldable bed according to an embodiment of the present disclosure.

FIG. 1E is a bottom view of the foldable bed according to an embodiment of the present disclosure.

FIG. 2A is a perspective view of how to fold the foldable bed according to an embodiment of the present disclosure.

FIG. 2B is a front view of how to fold the foldable bed according to an embodiment of the present disclosure.

FIG. 3A is a perspective view of the foldable bed folded according to an embodiment of the present disclosure.

FIG. 3B is a front view of the foldable bed folded according to an embodiment of the present disclosure.

FIG. 3C is a left lateral view of the foldable bed folded according to an embodiment of the present disclosure.

FIG. 3D is a top view of the foldable bed folded according to an embodiment of the present disclosure.

FIG. 3E is a bottom view of the foldable bed folded according to an embodiment of the present disclosure.

FIG. 4 is a perspective view of the foldable bed with a basal bottom element according to an embodiment of the present disclosure.

FIG. 5 is a perspective view of the foldable bed with a sheet-like element according to an embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE INVENTION

To facilitate understanding of the object, characteristics and effects of this present disclosure, embodiments together with the attached drawings for the detailed description of the present disclosure are provided. The present disclosure is implemented or applied by other different, specific embodiments. Various modifications and changes can be made in accordance with different viewpoints and applications to details disclosed herein without departing from the spirit of the present disclosure. Furthermore, the accompanying drawings of the present disclosure are illustrative but are not drawn to scale. Technical features of the present disclosure are illustrated by embodiments and described below, but the embodiments are not restrictive of the claims of the present disclosure.

Referring to FIG. 1A through FIG. 3E and FIG. 5, a foldable bed 100 in an embodiment of the present disclosure comprises a front right extensible rod R1, a rear right extensible rod R2, a front left extensible rod L1, a rear left extensible rod L2, a front support portion M1, a front support bottom base M3, a rear central extensible rod M2, a bridge-shaped link member M4, a first front right oblique rod R11, a second front right oblique rod R12, a first rear right oblique rod R21, a second rear right oblique rod R22, a first front left oblique rod L11, a second front left oblique rod L12, a first rear left oblique rod L21, a second rear left oblique rod L22, two rear oblique rods M22, two front oblique rods M11, two front slide rods M12, a front connecting rod M41, a rear connecting rod M42 and a sheet-like element G.

Referring to FIG. 1A, the front right extensible rod R1, rear right extensible rod R2, front left extensible rod L1 and rear left extensible rod L2 are disposed at four vertices of a rectangle, respectively. The front support portion M1 and front support bottom base M3 are disposed between the front right extensible rod R1 and front left extensible rod L1. The front support portion M1 is disposed above the front support bottom base M3. The rear central extensible rod M2 is disposed between the rear right extensible rod R2 and rear left extensible rod L2.

The two ends of the first front right oblique rod R11 pivotally connect to the top end of front right extensible rod R1 and the bottom end of rear right extensible rod R2, respectively. The two ends of the second front right oblique rod R12 movably connect to front right extensible rod R1 and pivotally connect to front support bottom base M3, respectively. The two ends of the first front left oblique rod L11 pivotally connect to the top end of front left extensible rod L1 and the bottom end of rear left extensible rod L2, respectively. The two ends of the second front left oblique rod L12 movably connect to front left extensible rod L1 and pivotally connect to front support bottom base M3, respectively.

The two ends of the first rear right oblique rod R21 pivotally connect to the bottom end of front right extensible rod R1 and the top end of rear right extensible rod R2, respectively. The two ends of the second rear right oblique rod R22 pivotally connect to the bottom end of rear central extensible rod M2 and movably connect to rear right extensible rod R2, respectively. The two ends of the first rear left oblique rod L21 pivotally connect to the bottom end of the front left extensible rod L1 and the top end of the rear left extensible rod L2, respectively. The two ends of the second rear left oblique rod L22 pivotally connect to the bottom end of the rear central extensible rod M2 and movably connect to the rear left extensible rod L2, respectively.

The two ends of the two rear oblique rods M22 pivotally connect to the top end of the rear central extensible rod M2 and the bottom end of the rear right extensible rod R2, respectively, and pivotally connect to the top end of the rear central extensible rod M2 and the bottom end of the rear left extensible rod L2, respectively.

The two ends of the two front oblique rods M11 pivotally connect to the bottom end of the front support portion M1 and the bottom end of the front right extensible rod R1, respectively, and pivotally connect to the bottom end of the front support portion M1 and the bottom end of the front left extensible rod L1, respectively.

The two front slide rods M12 have their one ends pivotally connect to upper portions of the two front oblique rods M11, respectively, and have their the other ends slidably connect to the second front right oblique rod R12 and the second front left oblique rod L12, respectively.

The two ends of the bridge-shaped link member M4 pivotally connect to the front support bottom base M3 and the bottom end of the rear central extensible rod M2, respectively. The bridge-shaped link member M4 has the center C which enables pivotal rotation. The bridge-shaped link member M4 has a front pivotal connection point C1 and a rear pivotal connection point C2, with the front and rear pivotal connection points C1, C2 lying in front of the center C and at rear of the center C, respectively. The two ends of the front connecting rod M41 pivotally connect to point C1 and the front support portion M1, respectively. The two ends of the rear connecting rod M42 pivotally connect to point C2 and movably connect to the rear central extensible rod M2, respectively.

The sheet-like element G is held by the top end of the front right extensible rod R1, the top end of the rear right extensible rod R2, the top end of the front left extensible rod L1, the top end of the rear left extensible rod L2, the top end of the rear central extensible rod M2, and the top portion of the front support portion M1. The sheet-like element G is made of a soft material, for example, fabric and plastic.

In the embodiment illustrated by FIG. 1A and FIG. 2A, regarding the front right extensible rod R1, rear right extensible rod R2, front left extensible rod L1, rear left extensible rod L2 and rear central extensible rod M2, their outer rods R1 a, R2 a, L1 a, L2 a, M2 a are disposed above their inner rods Rib, R2 b, L1 b, L2 b, M2 b, respectively.

The second front right oblique rod R12 movably connect to the outer rod R1 a of the front right extensible rod R1. The second front left oblique rod L12 movably connect to the outer rod L1 a of the front left extensible rod L1. The second rear right oblique rod R22 movably connect to the outer rod R2 a of the rear right extensible rod R2. The second rear left oblique rod L22 movably connect to the outer rod L2 a of the rear right extensible rod L2. The rear connecting rod M42 movably connect to the outer rod M2 a of the rear central extensible rod M2.

A way of folding the foldable bed 100 of the present disclosure is described below.

Referring to FIG. 1A, FIG. 2A and FIG. 3A, to fold the foldable bed 100 of the present disclosure, a user pushes the extensible rods inward toward the center of the rectangle such that the first front right oblique rod R11, first rear right oblique rod R21, first front left oblique rod L11, first rear left oblique rod L21, second rear right oblique rod R22, second rear left oblique rod L22 and two rear oblique rods M22 lift the outer rods and thus expose the inner rods, respectively, and the total length of the extensible rods (front right extensible rod R1, rear right extensible rod R2, front left extensible rod L1, rear left extensible rod L2 and rear central extensible rod M2) increases. Since the lengths of the first front right oblique rod R11, first rear right oblique rod R21, first front left oblique rod L11, first rear left oblique rod L21, second rear right oblique rod R22, second rear left oblique rod L22 and two rear oblique rods M22 are constant, each oblique rod demonstrates an increased proportion in the height direction and a decreased proportion in the width direction; hence, the extensible rods can be spontaneously drawn together. With the front right extensible rod R1 and front left extensible rod L1 approaching each other, the two front oblique rods M11 lift the front support portion M1, whereas the two front slide rods M12 assist the front support portion M1 in moving only over the front support bottom base M3 without deviating.

The lift of the front support portion M1 and the extension of the rear central extensible rod M2 together drives the front connecting rod M41 and rear connecting rod M42 to move, whereas the front connecting rod M41 and rear connecting rod M42 together drive the bridge-shaped link member M4 to move. The bridge-shaped link member M4 pivotally rotates about the center C such that the bridge-shaped link member M4 folds.

Referring to FIG. 3A, not only can the extensible rods, the front support portion M1, and the rear central extensible rod M2 gather, but the sheet-like element G can also be folded and held therebetween; hence, the foldable bed 100 of the present disclosure can be folded to take on the least possible volume, so as to be conveniently stored and transported. To unfold the foldable bed 100 of the present disclosure, the user simply pulls the extensible rods away from each other.

Referring to FIG. 3A, the foldable bed 100 of the present disclosure further comprises a winding element W. One end of the winding element W connects to one of the front right extensible rod R1, rear right extensible rod R2, front left extensible rod L1, rear left extensible rod L2 and rear central extensible rod M2 so as to tie up the extensible rods which have been gathered. The winding element W is, for example, a hook-and-loop fastener or a rope with a lock, but the present disclosure is not limited thereto.

Refer to FIG. 1A and FIG. 2A for the following technical features. The first front right oblique rod R11 and first rear right oblique rod R21 cross each other and pivotally connect to each other. The first front left oblique rod L11 and first rear left oblique rod L21 cross each other and pivotally connect to each other. The second front right oblique rod R12 and front oblique rod M11 cross each other and pivotally connect to each other. The second front left oblique rod L12 and front oblique rod M11 cross each other and pivotally connect to each other. The second front left oblique rod L12 and front oblique rod M11 cross each other and pivotally connect to each other. The second rear right oblique rod R22 and rear oblique rod M22 cross each other and pivotally connect to each other. The second rear left oblique rod L22 and rear oblique rod M22 cross each other and pivotally connect to each other. Therefore, the foldable bed 100 of the present disclosure is stable when unfolded.

Referring to FIG. 1A, FIG. 4 and FIG. 5, the foldable bed 100 of the present disclosure further comprises a basal bottom element B disposed at the bottom of the sheet-like element G, at the top end of the second front right oblique rod R12, between the two ends of the rear right extensible rod R2, at the top end of the second front left oblique rod L12, between the two ends of the rear left extensible rod L2, at the top end of the rear connecting rod M42, and at a top portion of the front support portion M1 to support the sheet-like element G. The basal bottom element B is made of a soft material, for example, fabric and plastic. When the extensible rods, the front support portion M1, and the rear central extensible rod M2 gather, the basal bottom element B is folded and positioned therebetween.

Referring to FIG. 1A, FIG. 2A and FIG. 4, the foldable bed 100 of the present disclosure further comprises two support elements S disposed at the outer rod R2 a of the rear right extensible rod R2 and the outer rod L2 a of the rear left extensible rod L2, respectively, to support the basal bottom element B.

Referring to FIG. 1A and FIG. 5, when unfolded, the foldable bed 100 of the present disclosure has features as follows: the top portion of the front support portion M1 is lower than the top end of the front right extensible rod R1, the top end of the rear right extensible rod R2, the top end of the front left extensible rod L1, the top end of the rear left extensible rod L2 and the top end of the rear central extensible rod M2. Therefore, the foldable bed 100 of the present disclosure can function as a sofa or a couch, albeit a simple one.

While the present disclosure has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the present disclosure set forth in the claims. 

What is claimed is:
 1. A foldable bed, comprising: a front right extensible rod, a rear right extensible rod, a front left extensible rod, a rear left extensible rod, a front support portion, a front support bottom base, a rear central extensible rod, a bridge-shaped link member, a first front right oblique rod, a second front right oblique rod, a first rear right oblique rod, a second rear right oblique rod, a first front left oblique rod, a second front left oblique rod, a first rear left oblique rod, a second rear left oblique rod, two rear oblique rods, two front oblique rods, two front slide rods, a front connecting rod, a rear connecting rod and a sheet-like element, wherein the front right extensible rod, the rear right extensible rod, the front left extensible rod and the rear left extensible rod are disposed at four vertices of a rectangle, respectively, such that the front support portion and the front support bottom base are disposed between the front right extensible rod and the front left extensible rod, with the front support portion disposed above the front support bottom base, with the rear central extensible rod disposed between the rear right extensible rod and the rear left extensible rod, wherein two ends of the first front right oblique rod pivotally connect to a top end of the front right extensible rod and a bottom end of the rear right extensible rod, respectively, two ends of the second front right oblique rod each movably connect to the front right extensible rod and pivotally connect to the front support bottom base, two ends of the first front left oblique rod pivotally connect to the top end of the front left extensible rod and a bottom end of the rear left extensible rod, respectively, two ends of the second front left oblique rod each movably connect to the front left extensible rod and pivotally connect to the front support bottom base, wherein two ends of the first rear right oblique rod pivotally connect to the bottom end of the front right extensible rod and the top end of the rear right extensible rod, respectively, two ends of the second rear right oblique rod pivotally connect to the bottom end of the rear central extensible rod and movably connect to the rear right extensible rod, respectively, two ends of the first rear left oblique rod pivotally connect to the bottom end of the front left extensible rod and the top end of the rear left extensible rod, respectively, and two ends of the second rear left oblique rod pivotally connect to the bottom end of the rear central extensible rod and movably connect to the rear left extensible rod, respectively, wherein two ends of the two rear oblique rods pivotally connect to the top end of the rear central extensible rod and the bottom end of the rear right extensible rod, respectively, and pivotally connect to the top end of the rear central extensible rod and the bottom end of the rear left extensible rod, respectively, wherein two ends of the two front oblique rods pivotally connect to the front support portion and the bottom end of the front right extensible rod, respectively, and pivotally connect to the front support portion and the bottom end of the front left extensible rod, wherein the two front slide rods have their one ends pivotally connected to upper portions of the two front oblique rods and their other ends slidably connected to the second front right oblique rod and the second front left oblique rod, respectively, wherein two ends of the bridge-shaped link member pivotally connect to the front support bottom base and the bottom end of the rear central extensible rod, respectively, the bridge-shaped link member is pivotally rotatable about a center thereof, the bridge-shaped link member has a front pivotal connection point and a rear pivotal connection point, with the front and rear pivotal connection points, lying in front of the center and at rear of the center, respectively, such that two ends of the front connecting rod pivotally connect to the front pivotal connection point and the front support portion, respectively, and two ends of the rear connecting rod pivotally connect to the rear pivotal connection point and movably connect to the rear central extensible rod, respectively, wherein the sheet-like element is held by the top end of the front right extensible rod, the top end of the rear right extensible rod, the top end of the front left extensible rod, the top end of the rear left extensible rod, the top end of the rear central extensible rod and a top portion of the front support portion.
 2. The foldable bed of claim 1, wherein an outer rod of the front right extensible rod is disposed above an inner rod of the front right extensible rod, an outer rod of the rear right extensible rod is disposed above an inner rod of the rear right extensible rod, an outer rod of the front left extensible rod is disposed above an inner rod of the front left extensible rod, an outer rod of the rear left extensible rod is disposed above an inner rod of the rear left extensible rod, and an outer rod of the rear central extensible rod is disposed above an inner rod of the rear central extensible rod.
 3. The foldable bed of claim 2, wherein the second front right oblique rod movably connect to an outer rod of the front right extensible rod, the second front left oblique rod movably connect to an outer rod of the front left extensible rod, the second rear right oblique rod movably connect to an outer rod of the rear right extensible rod, the second rear left oblique rod movably connect to an outer rod of the rear right extensible rod, and the rear connecting rod movably connect to an outer rod of the rear central extensible rod.
 4. The foldable bed of claim 1, wherein the first front right oblique rod and the first rear right oblique rod cross each other and pivotally connect to each other, the first front left oblique rod and the first rear left oblique rod cross each other and pivotally connect to each other, the second front right oblique rod and the front oblique rod cross each other and pivotally connect to each other, the second front left oblique rod and the front oblique rod cross each other and pivotally connect to each other, the second front left oblique rod and the front oblique rod cross each other and pivotally connect to each other, the second rear right oblique rod and the rear oblique rod cross each other and pivotally connect to each other, the second rear left oblique rod and the rear oblique rod cross each other and pivotally connect to each other.
 5. The foldable bed of claim 1, further comprising a basal bottom element disposed at the bottom of the sheet-like element, the top end of the second front right oblique rod, the top end of the rear right extensible rod, the top end of the second front left oblique rod, the top end of the rear left extensible rod, the top end of the rear connecting rod, and the top portion of the front support portion to support the sheet-like element.
 6. The foldable bed of claim 5, further comprising two support elements disposed at an outer rod of the rear right extensible rod and an outer rod of the rear left extensible rod, respectively, to support the basal bottom element.
 7. The foldable bed of claim 1, further comprising a winding element with an end connected to one of the front right extensible rod, the rear right extensible rod, the front left extensible rod, the rear left extensible rod and the rear central extensible rod.
 8. The foldable bed of claim 1, wherein, when the foldable bed is unfolded, the top portion of the front support portion is lower than a top end of the front right extensible rod, a top end of the rear right extensible rod, a top end of the front left extensible rod, a top end of the rear left extensible rod, and a top end of the rear central extensible rod. 